Enter the
show license
command. The License State should be shown as
“
Active, In Use
”
.
•
Verify that the vNIC for the VMs are connected to the correct physical NIC, or to the proper vSwitch.
•
If using virtual LANS (VLANs), make sure the vSwitch is configured with the correct VLAN.
•
If using static MAC addresses, or VMs that are cloned, make sure there are no duplicate MAC addresses.
Duplicate MAC addresses can cause the Cisco CSR 1000v feature license to become invalidated, which
will disable the router interfaces.
Troubleshooting VM Performance Issues
The Cisco CSR 1000v operates within a set of supported VM parameters and settings to provide certain levels
of performance that have been tested by Cisco.
Use vSphere Client to view data to troubleshoot VM performance. If you
’
re using vCenter, you can view
historical data. If you
’
re not using vCenter, you can view live data from the host.
Do the following to troubleshoot performance issues:
•
Verify that the router is configured for the correct MTU setting.
By default, the maximum MTU setting on the router is set to 1500. To support jumbo frames, you need
to edit the default VMware vSwitch settings. For more information, see the VMware vSwitch
documentation.
ESXi 5.0 supports a maximum MTU size of 9000, even if jumbo frames are enabled on
the router.
Note
•
The Cisco CSR 1000v does not support memory sharing between VMs. On the ESXi host, check the
memory counters to find out how much used memory and shared memory is on the VM. Verify that the
balloon and swap used counters are zero.
•
If a given VM does not have enough memory to support the Cisco CSR 1000v, increase the size of the
VM
’
s memory. Insufficient memory on the VM or the host can cause the Cisco CSR 1000v console to
hang and be non-responsive.
When troubleshooting performance issues, note that other VMs on the same host as the
Cisco CSR 1000v can impact the performance of the Cisco CSR 1000v VM. Verify that
other VMs on the host are not causing memory issues that are impacting the Cisco CSR
1000v VM.
Note
•
Verify that no network packets are being dropped. On the ESXi host, check the network performance
and view the counters to measure the number of receive packets and transmit packets dropped.
•
Verify the current maximum throughput level with the
show platform hardware throughput level
command.
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Troubleshooting Cisco CSR 1000v VM Issues
Troubleshooting VM Performance Issues
